Depending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.
To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.
Recommend to read
SKI-VODOCHODY: ANOTHER OPTION
In the "M-K" №4 for the year 1989 was published an article devoted to the ski-Vodochody... I Read it and wished I still had not written to the editor, not shared with the readers of...
FROM “PIONEER” TO “JUNIOR”
Throwing glider pioneer. Non-motorized model glider is very popular among modelers. Made in the form of models of monotypes, throwing gliders allow for fun competitions on the range,...
